package puppy;
public class Puppy {
int puppyAge;
public Puppy(String name){
    System.out.println("小狗的名字："+name);
}
public void setAge(int age){
    puppyAge=age;
}
public int getAge(){
    System.out.println("小狗的年龄："+puppyAge);
    return puppyAge;
}
public static void main(String[]args){
Puppy myPuppy=new Puppy("tommy");
myPuppy.setAge(2);
myPuppy.getAge();
System.out.println("变量值"+myPuppy.puppyAge);
}}





